OSBM Bolt: Giltspur Street GPO Datum Bolt   

Datum Bolt 2 - on GPO Building, SE side of Giltspur Street, SW face, 62' from S angle.

Location
Grid reference: TQ 3184 8145.
Landranger 176: West London, Rickmansworth & Staines.
Landranger 177: East London, Billericay & Gravesend.
Structure: Post office.
Waypoint: OS0847.

Neighbouring Flush Brackets

S7174	Newgate Street, General Post Office 50.99m to the east.
S0541	St Paul's Cathedral 338.38m to the southeast.
S0549	High Holborn, Municipal Offices 1.47km to the west.
S7173	Southwark, Parcel Office 1.52km to the south.
L1	British Museum 1.70km to the west.

The nearest fundamental bench mark is Croydon, 20.84km to the south.

Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Croydon to Buntingford levelling line. The surveyor's description was Datum Bolt 2 - on GPO Building, SE side of Giltspur Street, SW face, 62' from S angle.

Logged Visits
Logged on 20th October 2007 by dal. Condition: Probably destroyed.
Couldn't find the PO building, area now seems to be a Merrill Lynch building. So either destroyed or buried.